Answer:
∠1 and ∠2 are congruent because they are a pair of alternate interior angles.
Step-by-step explanation:
Given a pair of parallel lines which are cut by traversal line as shown in figure.
∠1 and ∠2 are shown in figure.
we have to find the relation between ∠1 and ∠2
∠1 and ∠2 angles are formed on opposite sides of the traversal and are on the inner side of the two parallel lines are alternate interior angles.
By the theorem
If two lines are parallel then the alternate interior angles are equal i.e
∠1 and ∠2 are congruent because they are a pair of alternate interior angles.
Option 3 is correct.
